JPH059988A - Joint member of shield panel wall face in electromagnetic shielding room - Google Patents

Abstract

PURPOSE:To improve shield effect by providing a mechanism to heighten press- fitting effect on a fitting in the case of connecting a shield panel end edge part from both of front and back faces with the fitting. CONSTITUTION:Insertion grooves 13 are provided on both sides of a protruded part 12, and protruded support members forming overhung pieces 15 with projected wires 17 are provided on both sides of a base part 14. Thereafter, an L letter shape press plate 11 with the projected wire 17 is provided and its bent part is formed in a slightly more acute angle than 90 deg.. Then, at the time of connecting a shield panel P planarly, the shield panel P is sandwiched with the overhung piece 15 of the protruded support member and the press plate 11 and fixed with an installation screw B. And then, at the time of fitting an insertion piece 16 of the press plate 11 in the insertion groove 13, both of them are made to work together, and downward pressure is applied to the projected wire 17 with the insertion piece 16 as its supporting point. Additionally, in the case of connecting angular parts, a connection part roughly similar to the L letter member is formed. Consequently, it is possible to heighten adhesion of the connection part and to improve shield effect.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a new member used as a connecting member such as an aggregate such as a pillar or a beam for assembling a shield panel in an electromagnetically shielded room.

[0002]

2. Description of the Related Art The performance of a shielded room depends on how completely the plated steel plate on the surface of the shield panel and the connecting member for connecting the panels are completely connected. Conventionally, as a connecting member between shield panels constituting a shield room, a shield panel P having a core material m coated with plated steel sheet s is connected as shown in FIG. For the member a and the corners, the connecting member c as shown in (c) was used as the connecting means. As another connection method, as shown in FIG. 10, the sandwiching plates e and f are used for the flat portion and the corner portion, respectively. However, in the case of the connection method of FIG. 9, the contact is almost made only at the screw location due to the change in shape as shown in FIG. 11, and in the case of the connection method of FIG. 10, both sides of the screw fastening portion are lifted in the direction of the arrow and further screw fastening Due to this, a change in shape of the sandwiching plates e and f is also added, and contact is incomplete, resulting in a technical difficulty. In addition, for example, when fixing panels to the ceiling surface, it is necessary to simultaneously support the panels that are in contact with each other on the ceiling surface and to fix them, and both boards must be removed at the same time for removal, and it is necessary for two people to work together. There are difficulties that require. Furthermore, since thin plates such as aluminum, brass, zinc, and iron plates, which have good electrical conductivity, are used in terms of material, even flat plates are prone to physical distortions and corrugations due to physical shape changes, and close contact between contact surfaces and joint surfaces. There is a drawback that it lacks in nature and impairs the shield effect.

[0003]

SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned problems, and the main points thereof are: a connecting member that can be attached and detached by human work, and a gap generated by a change in shape. By improving the contact structure between the members, a member structure is provided that can enhance the adhesion action. It was constructed as a means for solving the two problems.

[0004]

As means for solving the above-mentioned problems, the flat surface connecting member of the shield wall surface is composed of a convex supporting member and an L-shaped pressing plate fitted into the insertion groove of the supporting member. Each of the members, a ridge is provided on the shield plate joint surface of each member, and the L-shape of the pressing plate is bent at a slightly acute angle.
The corner connecting member is composed of a square member and an L-shaped pressing plate, and a ridge is provided on each shield plate joining surface of each member.
In addition, the present invention relates to a connecting member in which the L shape of the pressing plate is configured to have a slightly acute angle.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a flat surface connecting member 10 according to a first embodiment of the present invention, which comprises a convex supporting member of aluminum extruded member and an L-shaped pressing plate which is fitted and assembled integrally with the convex supporting member. The convex support member has insertion grooves 13, 13 on both sides of the convex portion 12.
And the projecting pieces 15 are extended on both sides of the base portion 14.
The pressing plate 11 is an L having an insertion piece 16 as shown in FIG.
The bent portion is formed at a slightly sharper angle than 90 °. Further, a ridge 17 is provided on the upper surface of the protruding piece 15 of the convex support member and the lower surface of the pressing plate 11. As shown in FIG. 6, the assembly structure of the wall surface of the plane portion including the convex support member and the L-shaped pressing plate illustrated above is a convex support member of the connecting member between the shield panels P and P that are adjacent to each other in the plane shape. And the pressing plate 11 inserted into the insertion groove 13 of the convex portion 12 and the projecting piece 15 of the convex supporting member are assembled as an integral flat wall surface.

The above-mentioned embodiment is

[0003] The problem is to solve the gap due to the change of the shape of the panel surface is an implementation structure for improving the contact action by improving the contact structure between the members, FIG. 4 is the main problem of the present invention It shows the technical basis of the action,
Further, the details will be described with reference to FIGS.

First, the shield panel P of (A) comes into surface contact with the pressing plate of the connecting member of (B), but the pressing plate is fitted in the insertion groove of the connecting member, and the fitting degree is theoretically. Is X = Y, but in the case of a long-sized insertion piece, the parallel insertion fitting collapses due to a slight change in the shape in the actual implementation, and the insertion becomes impossible. Therefore, Y> X by design
Shield panel P as shown in (C)
There is a problem of poor contact between and. Therefore, as shown in (D) and (A), the pressing plate is an L-shaped plate having a forming surface of <90 °, and even if the parallel insertion fitting of the pressing plate is broken (D)
As in (b), the same α as when parallel insertion and fitting was done
= B is assumed to be formed. The structural and technical feature is that the insertion groove of the connecting member according to the present invention and the connecting structure between the pressing plate and the shield panel are (E).
The pressing plate and the shield panel are connected in parallel with each other by using the upper and lower close contact fulcrums S, S as force points. If this contact fulcrum does not merely hold the pressing plate in parallel, but if it is the contact between point C and point X (screw fastening part) as in (F), the connection between the shield panel and the connecting member is limited to point contact. Therefore, a strong downward pressure is exerted on the pressing plate by the close contact action with S and S as the force points, and complete close contact bonding is achieved. Further, as shown in (G), the ridges have a function of making the tip bite into the shield plate by the lower pressure of the pressing plate or L or is crushed M to make the honey-like contact with the shield panel even and complete. . Needless to say, this theory is applied to the pressing plate of the corner connecting member of claim 2 as the same structural and technical basis. Reference numeral 24 is a flat guide plate which is inserted to connect the connecting members.

As shown in FIG. 2, the corner connecting member 18 constituting the corner of the shield wall plate of claim 2 is composed of a right angled square portion 20 and an L-shaped pressing plate 19, and the square portion 20. Is provided with insertion grooves 21, 21 of the shield panel connected inside the L-shaped portion formed at a right angle. The rectangular portion 20 and the pressing plate 19 are provided with ridges 22 and 23, respectively. In the assembly for connecting the shield panel wall surface composed of these two members to the corners, the shield panels P and P are sandwiched between the pressing plate 19 fitted in the insertion groove 21 and the square portion 20 of the square member as shown in FIG. The corners of the electromagnetically shielded chamber are integrally assembled by a connecting member. Reference numeral 25 is an L-shaped guide plate that is inserted when connecting the connecting members.

[0009]

[Effects] The flat surface connecting member of claim 1 and the corner connecting member of claim 2 are structurally and technically resolved of the drawbacks of the conventional connecting members, and the rationale is as described above.
Since a ridge is provided on the contact surface with the shield panel wall surface, the unevenness of the surface changes due to planar contact with the connecting member and the line contact with several ridges on the distorted surface greatly enhances the adhesion. effective. Further, since the pressing plates 11 and 19 are angle plates having an angle smaller than the forming angle of the insertion groove and the shield wall plate at a substantially right angle, the crimping effect by the close contact fulcrum S of the connecting member to the shield wall surface is required. It is effective for maintaining watertight contact with the shield panel without shifting or loosening due to external pressure or impact. As shown in the graph of Fig. 8, the shielding effect is 70DB or less in the conventional single-vanel type shielded room up to a low frequency, that is, 400MHZ, and 50DB or less in a high frequency, that is, 400MHZ to 1000MHZ. The shielding effect of the invention structure in a shielded room is 1000 MHz.
In (1GHZ), it is markedly improved to over 80DB. Furthermore, since the screw fastening is also a fastening location that avoids a portion that impedes the contact effect due to the attachment of chips generated during construction, the conventional difficulties are eliminated and the structural and technical advantages of the connecting member of the present invention are remarkable.

[Brief description of drawings]

FIG. 1 is an overall view showing a configuration of a flat surface connecting member.

FIG. 2 is an overall view showing a configuration of a corner connecting member.

FIG. 3 is an overall view showing a configuration of a pressing plate.

FIG. 4 is a main part view showing the action of the pressing plate and the insertion groove.

FIG. 5 is an explanatory view showing a technical feature of the present invention (A) a partial cross-sectional view of a shield panel. (B) An assembly operation diagram between the flat surface connecting members. (C) Inserting action diagram of the pressing plate. (D) L-shaped angle formation view of the pressing plate. (E) The principal part view of the connection between the holding plate and the shield panel inserted in the connection member insertion groove. (F) The explanatory view of the operation of (E) figure. (G) Enlarged view of the engagement between the ridge and the plated steel plate.

FIG. 6 is a view showing the main assembly structure of a shield panel using a flat surface connecting member.

FIG. 7 is a view showing the main assembly structure of a corner connecting member.

FIG. 8 is a graph showing a comparison between the shielding effect of the present invention and the conventional technique.

FIG. 9 is an assembly view of a conventional connecting member. (Part 1) (A) Shield panel. (B) Flat connecting member. (C) Square connection member.

FIG. 10 is an assembly view of a conventional connecting member. (Part 2) (a) Assembly and operation diagram of the flat connecting member with the shield panel. (B) An assembly and operation diagram of the rectangular connecting member with the shield panel.

FIG. 11 is an enlarged view of a change in a panel shape of a conventional technique.

[Explanation of symbols]

10 Flat surface connecting member 11 Press plate 12 convex 13 Insert groove 15 Overhanging piece 17 ridges 18 Corner connection member 19 Press plate 20 Square 21 Insert groove 22 ridges 23 ridges S close contact point

Claims (2)

[Claims] 1. A flat surface connecting member comprising a convex supporting member and an L-shaped pressing plate, wherein the convex supporting member has insertion grooves on both sides of the convex portion and projecting pieces extending on both sides of the base portion. The L-shaped pressing plate is a supporting member, in which the L-shaped bent portion is formed at a slightly acute angle rather than a right angle, and in the insertion groove of the convex supporting member,
The shield panel wall surface in an electromagnetically shielded room is characterized in that the shield panel wall surface is connected to a watertight plane through a ridge provided on each member by fitting the L-shaped pressing plate. Connecting member 2. A corner connecting member composed of a right angled square member and an L-shaped pressing plate, wherein the square member is a member integrally formed with mounting portions provided on both sides of the square. The pressing plate is a member in which the L-shaped bent portion is formed at an acute angle rather than a right angle, and the pressing plate is fitted into the insertion groove provided in the attachment portion of the square member, and is provided in each member. A connecting member for a shield panel wall surface in an electromagnetically shielded room, characterized in that adjacent shield panels are connected to each other via projections in a watertight rectangular shape.